Expose the revid of the event revision in the API
Expose the revid of the event revision in the API

So custom applications can generate links to the revision
the event is about

Change-Id: I21d0417b9e014ff59f26a94cbcc28f22044a4a39

wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo